Line of Best Fit Linear

How much weight can I lift?

• 0 lbs

• 1 lb

• 2 lbs

• 6 lbs

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• y = 1.45x + 22
• y = -2x + 15
• y = 1.33x + 30
• y = -1.5x + 24

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

Select the statement that best describes the line.

• The line is the line of best fit.

• The line is NOT a line of best fit because it does not pass through two points.

• The line is NOT a line of best fit because it does not go through the middle of the data set.

• The line is NOT a line of best fit because it does not go through the origin.

The equation of the trend line
is  y= 1/2x +1. What does the x variable represent? 

• The number of laps

• The amount of time in hours

• The amount of time in minutes

• How long it takes to go 0 laps